Chemistry > Physical Chemistry > Equilibrium

For the reaction equilibrium $\text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g)$, the concentrations of $\text{N}_2\text{O}_4$ and $\text{NO}_2$ at equilibrium are $4.8 \times 10^{-2}$ and $1.2 \times 10^{-2}\text{ mol L}^{-1}$ respectively. The value of $K_c$ for the reaction is